Ink-fountain drive mechanism



L. R. BARBER.

INK FOUNTAIN DRIVE MECHANISM. APPl .lCATl0N men JULY 5.1921.

412,766 Patented Apr. 11, 11922.

5 INVENTOR.

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me-Fo mmnerve MECHANISM.

Application filed July 5,

To all whom it may concern: 7

Be it known that'LJLnwrs R. BARBER, a citizen of the United States, residing at Fresno,-coi 1nty of Fresno, State of California, have invented certain new and'useful' spread the ink ontothe ink plate of the press,

the present invention heinginore especially intended as an improvement over thetype of fountain drive mechanisms shown in United States Patent No. 1,018,484, dated Feb. 27th, 1912, and United States Patent No. 1,192,455, datedduly 25th, 1916.

The principal object of the inventionis to devise a fountain driving mechanism which will be operated directly from the driving lever of the moving bed of the press, and so arranged that a great leverage is oh tained, thereby reducing the power necessary to rotate the "ink-fountain roll, which necessarily has a' very'tight fit with its troughJ A further object ofthe invention is to produce a simple and inexpensive device and yet one whichwill be exceedingly effective for the pnrposeswhich it is designed.

These-objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal. the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Fig. l is aside outline of a press, showing my improved fountain-drive mechanism.

Fig. 2 is an enlarged side view, detached, of the fountain and the fountain-roll drivelever.

Fig. 3 is a top plan view of the rear end of the press, showing the ink-fountain mechanism.

Fig. 4; is a fragmentary view showing the means of operating the fountain-drive lever from the moving-bed lever. 7

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the stand of the press, on,

isp c i t s e Patented Aprai3h1922.

1921. Serial N0. 462,594.

which is pivoted the stand-lever 2 for operating' the moving-heel (not shown) and ink plate 3, which is driven by means of a connecting rod 4 attached to a fly or gear-wheel 5, itself rotated by a motor or other suitable means (not shown).

'Mounted on the'stand or frame 1 the rear end thereof is a pair of rigid arms '6,

to which is secured the fountain structure framefiwhioh carries a trough 8 in connection with which is turnably mounted the fountain roll 9, whose shaft 9 carries a ratchet wheel 10 having a hub 11.

Turnaloly mounted on the hub 11 is a fric tion plate 12 connected hyalink 13 to the ductor-roll bracket 14:,pivoted on the frame 7, and which carries the doctor-roll 15.

Also independently and turnably mounted v on the hub 11 is an arm or lever 16 which carries a frict on member .17 adapted to yieldahly engage the plate 12, and also carries a p'awl18'adapted to engage the wheel A link '19 connectsthe lever 16 with the main. lever 20 which is pivoted on a bracket 9'.

the stand-lever 2.

Thelower end of the lever 20 is formed or provided with"a.grooved member 22 in which rides a roller 23 turnahly mounted on a pin 24 which also forms thepivotal connection of the connecting rod with the le-.

ver ,2.

In this manner, the connectin'grod is used to drive two members-the levers 2 and 20, the rod only being directly connected to the one lever 2, the radial length of the other being diflerent from that of the lever 2.

The pivotal connection of the link 19 with the lever 20 is intermediate the pivotal con nection 20 of the lever 20 with the bracket 21, and the driving connection of said lever with the roller 23.

If an ink fountain is also positioned at the front end of the press, as for two-color work, an additional link 25 is connected to the lever 20 thesame distance above the pivotal connection 2O as the link 19 connects with said leverbelow the pivotal connection, said link 25 extending to a pawl-lever 26, which operates the forward fountain member.

In operation, the reciprocation of the lever 2 imparts a like reciprocation to the lever 20, such movement losing transmitted '80 secured to the stand 1, and is positioned" substantially in transverse alinement with 7 through the link 19 to the pawl lever 16, the

pawl on which alternately engages and disengages with the teeth of the ratchet wheel 10, intermittently rotating the roll 9.

At the same time, the movement of the [lever 16 in the direction which rotates the ratchet wheel and ink roll, causes the friction member 17 to rotate the plate '12 somewhat, causing the ductor roll to be then pressed firmly against the roll 9, to receive ink therefrom, while the reverse movement of the pawl lever draws said ductor roll away from the ink roll and presses it against the ink plate 8, thus inking the same,v

The roll 9 has a very tight fit in the trough 8, so as to prevent leakage of thin ink, and considerable power is therefore necessary to rotate the roll. For this reason, I have employed the leveragesystem herein shown and described, and which operates successfully a and efficiently, the multiplication of the leverage obtained, first at the lever 20 and then at the lever 16, not only absorbing but little powerfrom the motor or other driving means employed, but allowing me-to use comparatively light parts with but little chance-of breakage.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention asset forth herein.

\Vhile this specification sets forth in detail the present and preferred construction of of the press, a ratchet wheel on the roll, a pawl-lever mounted in connection with the printing presses gage roll and carrying a pawl adapted toengage the ratchet wheel, a leverpivotally mounted on the press stand and adapted'to be recipro cated by the connecting rod, and a link connecting said levers.

2. An ink-fountain drive mechanism for comprising with, a fountain 1 ink-roll, and a reciprocatingconnecting rod of the press, a ratchet wheel on the roll, a

pawl-lever turnably mounted concentric with the roll and carrying a pawl adapted to en-'1 V the ratchet wheel, a leverv pivotally mounted on the press stand,

in g a grooved portion, and a projection from the connecting rod riding in the groove.

3. An ink-fountain drive mechanism forprinting presses comprising with a fountain ink-roll and a reciprocating connection rod.

of the press, a ratchet wheel on the roll, a

pawl-lever turnably mounted on the roll-u shaft and carrying a pawl'adapted to en-c gage the ratchet-wheel, a lever pivotally mounted on the press-stand, a link connecting said levers, and a driving member projecting from the connecting rod and flexibly engaging the last named lever to reciprocate the same. i

4-. An ink-fountain drive mechanism for? printing presses comprising with afountain fink-roll, a stand-lever for operating the a link connect ing said levers, said last named lever hav moving-bed of the press and a reciprocating connecting rod connected to said standlever, alever mounted in 'connection with the ink-roll, means between said roll and lever for intermittently rotating said roll with a reciprocatory movement of said lever, a-

fountain-drive lever pivotally mounted on the press stand, a link connectingsaid lastnamed' levers,-'and a driving member pro- JGC'BlIlgfIOIIi the connecting rod at its point of connection with-the stand lever'and flex iblyengaging the fountain-drivelever;'

Intestimony whereof- I affix my signature LEWIS R. BARBER. 

